Enhance screen with Byobu's cool functionality

I’m a huge fan of screen and use it every day. Since I pretty much live in the terminal (using irssi for IRC and Mutt for email, as well as terminals for everything else from editing text files to doing various sysadmin-related things), I always look for ways to spruce up working in the terminal. Screen is a definite sanity-saver in that I can have one terminal window open and easily switch between different virtual consoles to accomplish different things....